Calibration rig

Abstract

A calibration rig for calibration and/or re-calibration of flow meters ( 5 ) and/or flow meter calibration carts ( 7 ) is described comprising: a source ( 1 ) of pure sterilized water, a piping manifold ( 3 ) connected to the source ( 1 ), at least one flow meter ( 5 ) connected to the source ( 1 ) via the piping manifold ( 3 ) and/or at least one flow meter calibration cart ( 7 ) connected to the source ( 1 ) via the piping manifold ( 3 ) and a drain pipe ( 23 ) connected to each flow meter ( 5 ) and to each flow meter calibration cart ( 7 ) to guide water from the flow meter ( 5 ) and/or the flow meter calibration cart ( 7 ) to a drain ( 23 ).

What is claimed is:  
     
         1 . A calibration rig comprising: 
 a source ( 1 ) of pure sterilized water, a piping manifold ( 3 ) connected to the source ( 1 ),    at least one flow meter ( 5 ) connected to the source ( 1 ) via the piping manifold ( 3 ) and/or    at least one flow meter calibration cart ( 7 ) connected to the source ( 1 ) via the piping manifold ( 3 ) and    a drain pipe ( 23 ) connected to each flow meter ( 5 ) and to each flow meter calibration cart ( 7 ) to guide water from the flow meter ( 5 ) and/or the flow meter calibration cart ( 7 ) to a drain ( 23 ).    
     
     
         2 . Calibration rig according to  claim 1 , wherein 
 a calibrated reference flow meter ( 21 ) is installed in parallel to a flow meter ( 5 ) or a flow meter calibration cart ( 7 ) to be calibrated or re-calibrated.    
     
     
         3 . Calibration rig according to  claim 1 , wherein 
 a calibrated reference flow meter ( 21 ) is installed in series to a flow meter ( 5 ) or a flow meter calibration cart ( 7 ) to be calibrated or re-calibrated.    
     
     
         4 . Calibration rig according to  claim 1 , 
 wherein a device ( 29 ) for measuring a quantity of water received from a flow meter ( 5 ) or a flow meter calibration cart ( 7 ) is installed between the flow meter ( 5 ) or the flow meter calibration cart ( 7 ) and the drain pipe ( 23 ).    
     
     
         5 . Calibration rig according to  claim 4 , 
 wherein the device ( 29 ) for measuring a quantity of water is a weigh tank.    
     
     
         6 . Calibration rig according to  claim 1 , 
 wherein a device ( 33 ) for supplying a predetermined quantity of water is installed between the source ( 1 ) and the flow meter ( 5 ) or the flow meter calibration cart ( 7 ).    
     
     
         7 . Method of calibration or re-calibration of a flow meter ( 5 ) or a flow meter calibration cart ( 7 ), comprising the steps of 
 mounting the flow meter ( 5 ) or the flow meter calibration cart ( 7 ) on a flow meter calibration rig according to one of the previous claims,    sending pure sterilized water through the flow meter ( 5 ) or the flow meter calibration cart ( 7 ), and    directing the water from the flow meter ( 5 ) or the flow meter calibration cart ( 7 ) to a drain ( 23 ).